Run Away, This Civilization Is Cheating! - Chapter 767 - 521: The Enemy’s Trump Card!_2

A man who was once called the world strongest agent ended up becoming a teacher after his retirement to train the new generation of agents. After many years of training his disciples, he is killed at the age of 60 by the ploy of a secret organization and was reincarnated in another world with all his past memories.Though he was surprised by the magic and the strange species of that world, he adapted very fast to his condition as a newborn and took advantage of it. He acquired special magic and gained a massive amount of strength thanks to his tight discipline in order to reach his goal: resume his career as a teacher which he left halfway through in his previous life.This is the story of a man who based on the memories and the experiences of his previous life, became a teacher who travels through the world with his new students.

During the Yongle period of the Ming Dynasty.

Zhang Anshi was ignorant, and he committed a heinous crime.

His brother-in-law is the prince? Oh, that’s all right!

- Description from novelbuddy

Gu Shanhai witnessed this great world of numerous heavens and discarded his third life.The gods of the human realm forged an eternal utopia with blood and fire.The King of the Red Dragon led his knights, patrolling the never-setting empire.The scholar, with a smile and a sword stroke, depicted thousands of miles of rivers and mountains, while monsters opened their eyes and stretched forth claws, giving birth to all manners of demons....'Everyone here is a player; you can't call me abnormal just because I haven't been digitized, right?'

Long Fei, a cross-timer and doujin, is an otaku who traveled to another world. In the original world, he was an otaku fan of Gundam and military science fiction.

He died in an accident and was reincarnated into another world. The Gundam works he had read before his death and the techniques in various military novels could be brought to another world.

How would he use the Gundam that Long Fei created? What waves can be caused in this different world?